Slider for fasteners



2 1933. M. KlESSLING ET AL 1,898,547

SLIDER FOR FASTENERS Filed Dec. 17, 1929 Patented Feb. 21, 1933 I. UNITED STATES PATENT OFFICE-L m KIESSLING AN D ADOLPH J. KRIEGER, OI WATEEBURF, CONNECTICU '1'; LSSIGNOBS TO G. E. PRENTICE MANUFACTURING COMPANY, 01' NEW BRITAIN, CONNECTICUT,

patent, many "been proposed.

A. CORPORATION OF CONNECTICUT SLIDER FOR FASTENERS Application filed December 17, 1929. semi int-414,668.

This invention pertains to fastening devices of the class commonly known as separable, interlocking, or hookless fasteners of which the patent to Judson, 557,207, dated er elements at the opposite edges of the gap are brought into cooperating relationship b means of a slider havin suitable camlike guides properly shaped or the purpose. However, it has been recognized since as early at least as the Judson patent above referred to, that if the cam elements of the slider are of such slope as to ensure ease of operation, the slider may slip lengthwise of the closed fastener in response to stresses tending to open the gap, thus allowing the gap to open inadvertently, unless some means be provided for positively holding the slider at the limit of its travel with the gap closed. In the.Judson patent referred to, a crude form of retaining means comprising loops adapted to engage appropriate pins was rovided for the purpose, and since the Ju son other retaining devices have Since rapidity of actuation is one of the a important advantages claimed for fasteners of this type, it is obvious that any retaining means requiring careful manipulation by the'operator detracts from the value of the device, and for this reason, attempts have been made toembody the retaining means in the actuating pull or tabin such a way that when the pull or tab is released after actuation of the slider and allowed to hang vertically down, the slider is automatically retained in position.- However, in most prior devices of the kind known to us, the retaining means involves the use of a member or members adapted to enter between adjacent fastener elements of the series, and when thus designed, such retaining devices tend to displace or distort the fastener elements so that they will not operate smoothly.

In accordance with the present invention, we provide a slider havmg a very simple, in-

expensive and reliable form of pull controlled retaining means which does not distort or displace the opposed fastener elements; which is durable and not liable to in'u from contact with external objects; w ic does not add to the bulk or'necessitate a change in the shape or general appearance of the sliders; and which will dependabl re 'tain the slider in adjusted position wit the pull in depending position;

In the accom anying drawing we have il-. lustrated a pre erred embodiment of our invention wherein the slider is adapted for use inv closing the gap by movement upwardly, and a modification thereof showin the invention applied to a slider which is moved downwardly for closing the gap.

In the drawing: 1

Fig. 1 is a fragmentary front elevation, to large scale, illustrating a fastener of the type referred to, provided with a slider embodying the present invention, and wherein the slider is moved upwardly for closing the p; I

Fig. 2 is a vertical section, substantially on the line 22 of Fig. 1, showing the parts positioned to retain the slider in adjusted position, certain of. the fastener elements being shown in section, but omitting the strin ers;

Fig. 3 is a side elevation of another em dimentof theinvention, indicating the changes necessary to permit use of the slider for closin a gap by downward movement;

ig. 4 is a plan view to large scale of a blank suitable for-use in forming the slider bod herein illustrated;

F i 5 is a top edge view of a novel pull device orming a part of the improved slider; Fig. 6 is a plan view to large scale of a blank useful in the preparation of the friction retaining device forming a part of the. invention and Fi device completed.

Referring to the drawing and particularly to Figs. 1 to 3, the numerals 1 and 2 designate 7 is an edge elevation of the friction tapes or stringers to which the opposed series of fastener elements 3 are respectively connected. While it is usual to furnish fasteners of this kind to the trade in the form of a complete structure comprising the tapes or strmgers upon which the series of fastener elements the fastener elements 3 as of the type more fully described and claimed in the patent to Prentice and Legat No. 1,658,392 dated February 7, 1928, but it is to be understood that the present invention is not to be limited to such specific use but is applicable to fasteners of other types falling within the general class.

For usein moving the fastener elements of the opposed series into operative relationship, we employ a slider S which in general may be of a type well known in the art as for example, that shown in the patent to Prentice No. 1,67 7 ,408, J uly-17 1928, although we have here illustrated the slider as of specifically novel form and construction. Thus, our improved slider comprises the front wing 4 (Fig. 2) and the rear wing 5 united by the neck 6, and this slider body may be formed conveniently from a unitary piece of sheet 7 metal sha ed to provide the blank shown in Fig. 5. his blank comprises the wing portions 4 and 5 integrally united by the neck 6 and having the elongate guide tongue 7 projecting integrally from the outer end of the wing portion 4. This elongate guide ton no 7 is provided near its free end with a portion 8 of reduced width, beyond whichthe ex-v tremity 9 of the tongue ain increases in width. The neck 6 is rovi ed at its opposite edges with inte ral ta s 10 and 11 and it is to be understood t at, as usual, in the manufacture of sheet metal sliders, the lateral ed es of the win portions 4' and 5 are bent mwardly toorm suitable guide flanges. The

blank, as shown in Fig. 5, is bent at the junctions of the win members with the neck so as to bring the wlng portions into substantially parallel relation, and the guide tongue 7 is then bent to provide the lower substantially horizontal portion 12 (Fig. 2), the substantially vertical guide portion 13 which is parallel to and spaced from the front surface of the wing 4, and the top member 14 which extends rearwardly across the top of the slider. The reduced portion 8 of the ton ue is disposed between the tabs 10 and 11 which are turned u wardly and then inwardly as indicated in ig. 1 so as to clamp the end portion of the tongue between them.

The front wing 4 is provided with an opening 15 for the assage of the friction shoe 16. This friction s oe is conveniently formed as an integral U-shaped bend in'a sheet nietal opening 15. This blank also comprises the end portions 17 and 18 of eater width than the neck and adapted to orm the arms 17 and 18. Preferably the outer ends of these arms are recessed or, forked to provide the retaining fingers 19 which engage the opposite edges of the guide member 13 in order to hold the rocker in properly assembled relation to the slider body. With this simple arrangement it is not necessary to employ rivets or other fasteners for holding the retaining means in assembled relation to the other parts, and the improved structure is but slightly more expensive to make than usual constructions. 7

The pull or tab 20 is here shown as of a general shape commonly employed in sliders of this type and is preferably made fromv sheet material of suitable character. In ac- I vFigs. 2, 3 and 5, the pull 20 is provided at its upper end with a transversely extending oflset 22 at its inner side, said oflset having a recess in its edge forming the s aced fin rs 23. As indicated -in Figs. 2 an 3, the, 0 set 22 of the pull is disposed between the front face of the rocker and the rear face of guide 13. When the pull is swung outwardly at a substantial angle to the direction of movement of the slider in order to facilitate actuation of the latter, the offset is thereby disposed more nearly parallel to the guide 3.3 and moves freely in the space between theguide 13 and the rocker, so that the position of the rocker is not affected substantially by ,so that the slider can be moved freely in either direction. Amuming that the slider is moved upwardly to close the fastener, as

' in the arrangement of Figs. 1 and 2, the pull 20, when released b the operator, will hang downwardly from t e lower end of the guide mean? 18, the weight of the pull tending swing it to a substantially vertical position. Since the ofiset 22 is of substantial width, the vert1-' 'ally depending pull causes the front and arm 18 now bears resiliently a inst the in be noted t would hang down in such' ner surface of the ide 13w 'ch' forms a slightl resilient a ut nent, and the pressure 0 the offset against the lower arm 17 causes the shoe 16 to project throu h the opening 15 and press forcibly against t e fastener elements, pushing them against the rear wall 5 of the slider and exertlng a frictionaldrag which efiectively prevents accidental movement of the slider. To assure the maintenance of this locking or holding action, the pull 20 may be swung rearwardly by pressure of the fingers toward the lane of the win 4 (with reference to the pivotal support 0 the pull upon the guide. 13) so that the offset will assume an inclined position Fig. 2). In thus-pressing the pull rearward the rocker arms 17 and 18 as well as the guide 13 may spring slightly, being formed of resilient material, and thus when the ull is dispowd in its rearward position, as escribed, the pressure of the parts will so retain it until it is positivelyswung forwardl beyond the vertical lane.

While this improved sli or is very useful for closing the gap by upward ull, it may at if inverted, as for c osing a gap by downward pull, the pull 20 when released ition that the gap between the parts 23 o the offset would receive the guide 13 and no locking ressure would be exerted on the arm 17. bus if it be desired to provide a slider useful in c osing a gap by downward movement, it is necessary, as indicated in Fig. 3, to reverse the arrangement of the pull as respects the arms of tliie rocker, so that wilen the ull is in id;- pen i position t e 0 set w' engage e arm l mstead of the arm 17. By roviding sliders of the two ty illustrated in Figs. 2 and 3 respectively, t e user ma select that best suite to his requirements, at is to say, that slider which is adapted to close the gap by upward or downward movement as the particular purpose may demand.

While we have illustrated certain desirable embodiments of the invention by way .of example, we wish-it to' be understood that the invention is not to be limited by the arrangement specifically shown and described but is broadly inclusive of such modified constructions as fall within the range of equivalency of the appended claims.

We claim: I

1. -A slider for fasteners of the kind having stringers carrying series of interengaging fas= tener elements, said slider comprising rant and rear wings, one of said wings having an openin therein, and an elongate guide extending longitudinally of t has the opening, an actuatin pull having an aperture for the reception 0% the guide 00p and movable along the latter substantially at wing whic from one end to the other of the slider, said pull having an offset cam portion adjacent to its aperture, and slider retainin means comprising a friction shoe provide with divergent arms, one'of said arms engaging the guide loop and the other being enga ed by the offset cam portion of the pull whlle the slider is retained in adjusted osition, said friction shoe being disposed in t e opemn in the wing and bein operative to exert rictional pressure against the front faces. of the fastener elements when the pull occu ies a predetermined position thereby to ho d the" slider against accidental movement longitudinall of the series of fastener elements.

2. l slider for fasteners of the kind having stringers carrying series of interengaging fas tener elements, said slider having front and rear wings, one of said win having an opening therethrough and an e on ate guide loop exten'ding'longitudinally of t e wing which has. the o ening therein, a pull havin an aperture or the reception of the ideoop and movable along the latter su stantially from one end to the other of the slider, said pull having a cam portion adjacent to its aperture, and slider retaining means comprising a rocker having a centrally dis osed friction shoe and divergent stifily resi ient arms, each arm having retaining fingers at its free end operative to engage the lateral edges of the guide loop whereby to position the rocker, said friction shoe passing freely through the .opening in the wing and being engageable with the front faces of the fastener elements for frictionally retaining the slider in adusted position whenthe pull occupies a predetermined position.

3. A slider for fasteners of the kind having stringers carrying series of interengaging fastener elements, said slider having front and rear wings, the front wing having an opening therethrough and an elongate ide loop extendin longitudinally of the out wing, a pull aving an aperture for the reception of the guide loop, the '-.pull being movable along the guide 100 sub- 'stantially from 'one' end to the ot er. of the slider, said pull having an offset cam portion, and retaining means comprising a rocker consisting of a unitary piece of sheet material having a central U-shaped bend constituting a friction shoe and having divergent stifly resilient arms provided with loop engaging elements at their free extremities, said friction shoe projecting freely through the opening in the front wing for illl'l engagement with the front faces of the fastener elements and being 0 erative, to retain the slider in adjusted position when the pull is so disposed that its offset cam portion presses one of the arms of the rocker sub stantially into contact with the outer surface of the front wing.

' 4. A slider for fasteners of the kind having stringers carrying series of interengaging fastener elements, said slider comprising front and rear wings, one wing having an opening therethrough, a longitudinally extending guide on said front wing and brid ing the opening, a pull movable along said guide substantially from one end to the other of the slider, and a retaining member proj ecting through the opening in the front wing for engagement with the fastener elements of the series, said pull having a part operative, by engagement with the retaining member when the pull is in depending position, positively to press the retaining member into operative relation with the fastener elements.

5. A slider for fasteners of the kind having stringers carrying series of interengaging fastener elements, said slider comprising front and rear wings, the front wing having an opening therethrough and an elongate guide loop extending longitudinally of the slider and spaced from the front wing, a friction member having a shoe portion extending through the opening in the wing for engagement with the fastener elements, and a pull movable along said guide loop, said pull having an offset part provided with spaced cam fingers engageable with the friction member for pressing the shoe portion of the latter against the fastener elements when the pull is in depending position, said cam fingers straddling the guide loop when the pull is positioned for. usein moving the slider for closingthe fastener whereby to avoid the application of locking pressure during such movement of the slider.

6. A slider for fasteners of the kind having stringers carrying series of interengaging fastener elements, said slider having front and rear wings, the front wing having an opening therethrough and an elongate guide, spaced from the front wing, retaining means disposed between the guide and the front wing and retained in position by engagement with said guide and front wing, said retaining means having a shoe projecting front and rear wings, the front wings having an opening therein and an elongate guide spaced from the front wing, a rocker comprising divergent arms dis osed between the guide and front wing an adapted for alternativeeengagement with the guide, said rocker having a central portion projecting through the opening in the wing and constituting a friction shoe, and a pull device suspended from the guide, said ull device being engageable with that end 0 the rocker which at the time does not engage the guide whereby to force the friction shoe against the fastener elements.

8. A slider for fasteners of the kind havng stringers carrying series of interengaging fastener elements, said slider having front and rear wings, the front win havin -an openlng therein, an elongate gui e space from the front wing, a rocker disposed between the guide and front win said rocker having end portions alternative y engageable with the inner surface of'the guide, and a central portion projecting through an opening in the wing and constitutin a friction shoe for engagement with the astener elements, and a pull device suspended from the guide and having an element enga eable with one arm, at least, of the rocker the friction shoe against the fastener elements. J

9 A slider for fasteners of the kind having stringers carrying series of interenga 'ng fastener elements, said slider having ront and rear wings, the front wing having an opening therein, an elongate guide spaced from the front wing, a rocker having a central part constituting a friction shoe di osed in the opening in the front wing an also comprising divergent arms ada ted to engage the inner surface of said gui e, and a pull suspended from the guide, said pull having a cam portion adapted simultaneously to react againstthe inner surface of the guide and one arm of the rocker respectively for forcing the pressure shoe against the fas tener elements.

Signed by us at Berlin, Conn., this 14th day of December, 1929. 1 1

MAX KIESSLING. ADOLPH J. KRIEGER.

loosely through the opening in the wing, and

a pull movable longitudinally of. the guide, the pull having parts engageable with the guide and with the retaining means respectively, for pressing and clamping the shoe against the fastener elements when the pull occupies a predetermined position with reference to the guide.

7. A slider for fasteners of the kind having stringers carrying series of interengag or forcing 

